Principle

　　The open vacuum rake dryer is a novel horizontal intermittent drying equipment. Wet materials are heated and evaporated through conduction, and the stirring shaft with rake teeth continuously removes the materials on the heating surface. The circulating flow is pushed inside the container, and the water evaporates before being pumped out by a vacuum pump.

　　The vacuum rake dryer device indirectly heats materials with steam or hot water and exhausts them under high vacuum, making it particularly suitable for drying materials that are not resistant to high temperatures and are prone to oxidation at high temperatures, as well as materials that require the recovery of steam or solvents discharged during the drying process.

Characteristic

A heated quick opening door and a hinged flat head

A cantilever rake tooth shaft with special internal heating design

A double end mechanical seal

A vacuum stainless steel sintering net dust collector with heating

A discharge valve on a piston mounted on the head

A vacuum feeding port equipped with the upper part of the host

A partition equipped with a sterile room to distinguish from the general style

A container that has undergone precision machining

CIP offline cleaning system

Application

1. Vacuum fully enclosed system, materials are not contaminated by external factors and do not pollute the outside world.

2. Under vacuum conditions, the drying temperature of the material is relatively low, which not only saves energy but also prevents the material from changing color due to high temperature.

3. Scientific and reasonable stirring and flipping movements cause relative displacement between materials, continuously updating the heated surface of the materials, making them less prone to clumping, evenly heated, and highly efficient.

4. The structure of the mixer composed of the rake shaft, rake arm, and rake teeth is reasonable, and the gap between the rake teeth and the cylinder wall is adjustable, allowing the material to come into contact with it without sticking.

5. The unique shaft seal structure completely solves the pollution problem of the shaft seal inside the vacuum chamber and meets GMP requirements.

6. The condensation filtration device in the vacuum system can recover most solvents, such as alcohol, acetone, nitrobenzene, alkylbenzene, and so on. Efficient, energy-saving, and environmentally friendly.

7. The thermal medium is steam, hot water, or thermal oil, with a wide range of heat sources to choose from.

8. The cylinder wall, main shaft, two end covers, and filter of this machine are all heated with heat medium. The inlet and filter neck are all insulated to effectively prevent condensation.

Use to

　　Due to the above-mentioned functions and characteristics of the fully open rake type stirring vacuum dryer, it has been successfully used in the production of raw materials, finished drugs and other series of products. The investment in this equipment can be recovered from recycled solvents (such as alcohol) within about a year, and the product grade of users has significantly improved. Effectively improving the market competitiveness of user products. Therefore, the fully open rake type stirring vacuum dryer is suitable for vacuum or pressurized stirring drying of various products in the pharmaceutical industry (meeting GMP requirements), food industry, and chemical industry.